a = ['中国', 56, 10.1, [60, 24]]
for t in a:
    print(t, '1')
a.append(56)
a.insert(1, 24)
print(a, '2')
a.pop(0)
a.remove(10.1)
print(a, '3')
print(a.count(56), '4')
print(a.index(24), '5')
a.pop(2)
a.sort()
print(a, '6')
print(sum(a), '7')
print(a[1:])
print(a[:2])
a[1:3]=[21,'长沙']
print(a)